• If this is your first visit to the iboats.com Boating Forums, be sure to check out the FAQ. To post a question or comment, begin by signing up. To start viewing messages, select the forum that you want to visit from the selection below.
  • ALL iboats Forum Members and Guests:
    To show our appreciation for your participation in the Forums, we're offering an exclusive Forums-only discount good for an additional 5% off your iboats.com order for a limited time.
    To redeem, simply call our Customer Service Team at 800-914-1123 (Open M-F, 9am - 8pm Eastern Time) and mention the Forums 5% off discount. Offer excludes engines, trolling motors, and electronics.

Announcement

Announcement Module
Collapse

Help Tip: If you have a question that has not been answered to your satisfaction in the archives, it is always best to start a new thread of your own. By starting your own thread, you will receive the maximum number of views by forum members.

Below are some additional forum policies in hopes of all iboats members will follow, Thank you.

1. Please do not reply to old threads or hijack existing threads. Old threads of a technical nature are like a library book, Please do not write in them.

2. Old threads should be considered archives and used for reference only. Please do not reply to them.

3. Do not take over someone elseís thread (aka hijack) with your own question, even if it is similar. If you have a question that has not been covered to your satisfaction in the archives, it is always best to start a new thread of your own.

4. If you have a question for the original poster (OP) and the thread is over 30 days old, send the OP a PM, he may not even visit the forums any longer, or may not notice your question in the old thread.

5. By starting your own thread, you will receive the maximum number of views by forum helpers that may not even notice your question when itís posted at the end of someone elseís thread. And those answers will be specific to your particular issue.

6. Please do not post to threads that have been inactive for more than 3 months unless you are the original poster. We have very active forums and any thread that remains inactive for that long should be considered "dead". It is especially confusing when there is an entirely new question posted to an old thread.

7. Posting at the end of any thread is considered to be hijacking the original posters thread which in turn subjects the thread to be closed if it continues to happen thus not making it fair to the original poster in the future had for some reason he/she needed to return for additional information or provide an update of the problem solved which is always welcomed within a reasonable amount of time frame.

8. Please note that you should see a red banner pop up near the bottom of each inactive thread asking you not to reply to old threads. The Red banner will read: Please note this thread has been inactive for 90 days. For the best results, please start a new thread.

Thank you all in advance for doing your part in helping iboats run a smooth ship.

Additional forum rules linked below.
http://forums.iboats.com/forum-rules-guidelines-405/
See more
See less

Mercruiser outdrive: pump runs but won't lower

Page Title Module
Move Remove Collapse
X
Conversation Detail Module
Collapse
  • Filter
  • Time
  • Show
Clear All
new posts


  • Mercruiser outdrive: pump runs but won't lower

    I bought a 1988 Stingray with a 130 Mercruiser that had been sitting for a couple of years. The outdrive is up, but when I hit the switch to bring it down, the pump motor runs, but nothing happens. It has plenty of oil. Any ideas?


  • #2
    Re: Mercruiser outdrive: pump runs but won't lower

    You could start with a BIG friend leaning on the drive And if that does not work you can crack the lines open and see if you can blead out the air AND see if the pump is pumping or just makeing noiseThen you can read up here http://www.boatfix.com/merc/Servmanl/6/6C1R3.PDF tommays
    If a dirty bottom slows you down what do think it does to your BOAT

    1970 Cal 29 Sea Fever
    http://cal29seafever.blogspot.com/
    1981 J24 Tangent 2930
    http://s565.photobucket.com/albums/s...%20for%20sale/
    Tommays
    Northport Ny

    Comment



    • #3
      Re: Mercruiser outdrive: pump runs but won't lower

      You could start with a BIG friend leaning on the drive
      Ayuh,...........And,.... If Leaning Isn't Enough,..??....... Try Jumping..........Then Grease It..........
      Any Grease is Better,..... Than No Grease at All.......

      Comment



      • #4
        Re: Mercruiser outdrive: pump runs but won't lower

        Thanks. That gives me a couple of things to try. The reference manual had some good ideas.

        Comment



        • #5
          Re: Mercruiser outdrive: pump runs but won't lower

          If it has good hydraulic pressure it is rebuild the sticky trim cylinder tyme!

          Comment



          • #6
            Re: Mercruiser outdrive: pump runs but won't lower

            When you crack the lines open the drive should come down on it's own.
            1974 Glastron V-179, Mercruiser 140
            1984 16.5ft. Alumarine Sealark side console with 82 Merc 50
            Homeport - Lac du Bonnet, MB, Canada
            I've used Fram oil filters in all my junk for 35 years-no problems

            Comment



            • #7
              Re: Mercruiser outdrive: pump runs but won't lower

              Unless the cylinder end cap is sticky.

              Comment



              • #8
                Re: Mercruiser outdrive: pump runs but won't lower

                When I bought my boat (with an alpha 1) the outdrive was up and had been for quite awhile. Same symptom - pump ran, drive wouldn't come down. Ended up needing my large friend to jump up and down on the drive while using the down button. It worked!

                Comment



                • #9
                  Re: Mercruiser outdrive: pump runs but won't lower

                  like waldo said, odds are the rams are stuck in the caps. there is not much hydraulic pressure in the down cycle. its not supposed to be needed.
                  no tech questions by PM, they wont get answered.
                  you have to be trusted by the people that you lie to .

                  Comment



                  • #10
                    Re: Mercruiser outdrive: pump runs but won't lower

                    Well, I disconnected the lines, and the pump is pumping good to the cylinders. I jumped up and down on the outdrive while running the pump in the down setting, but still nothing happened. I used a block of wood and hammer against the end of the cylinders to break anything loose, and still nothing. Any suggestions? Is there anyway to manually lower the outdrive? Thanks.

                    Comment



                    • #11
                      Re: Mercruiser outdrive: pump runs but won't lower

                      Did you remove the trailering clips?

                      Comment



                      • #12
                        Re: Mercruiser outdrive: pump runs but won't lower

                        Where are the trailering clips? I looked for anything that might have been proping it up, but didn't see anything.

                        Comment



                        • #13
                          Re: Mercruiser outdrive: pump runs but won't lower

                          I just double-checked. No clips.

                          Comment



                          • #14
                            Re: Mercruiser outdrive: pump runs but won't lower

                            Try removing the rams from the outdrive and see if it is frozen "up." It should obviously drop down when the rams are removed.

                            Comment



                            • #15
                              Re: Mercruiser outdrive: pump runs but won't lower

                              Update: I removed both rams, and neither will move at all, even if I put clamps on them and tighten the clams. I talked to a hydraulic specialist (not a boat guy), and he said they're not supposed to be able to move without the pump. He said to check the pressure on the pump, but I understand the pump is supposed to be a 'low pressure' pump. Anyone know how to check out the pump? Thanks.

                              Comment

                              Working...
                              X